I just received what is probably a copy of MyDoom. It looks like it might be somebody on Alug:
Received: from cpc1-norw2-3-0-cust125.pete.cable.ntl.com (HELO mdmbill.com) (81.100.212.125) by tuschin.blackcatnetworks.co.uk with SMTP; 31 Jan 2004 10:43:42 -0000
Note that mdmbill.com is not work-safe.
If you recognise yourself as the sender, you probably want to clean up your computer and install some anti-virus software :)
/Kirsten